Circuit Bench

• RIAA 3-Transistor Equalizer (CB1371E)

  This circuit was found in a Japanese documentation of the 70's. It uses transistors of the era and is...

• Regenerative Short Wave Receiver (CB441)

  For the 7 to 10 MHz band L1 is formed by 3 turns of 22 to 28 AWG wire in a ferrite core 15 to 20...